Results 21 to 30 of about 1,122,121 (342)

Estimação de parâmetros genéticos em caprinos leiteiros por meio de análise de regressão aleatória utilizando-se a Amostragem de Gibbs Estimation of genetic parameters for milk yield of dairy goats by random regression analysis using Gibbs Sampling

Revista Brasileira de Zootecnia, 2006
Modelos de regressão aleatória foram utilizados neste estudo para estimar parâmetros genéticos da produção de leite no dia do controle (PLDC) em caprinos leiteiros da raça Alpina, por meio da metodologia Bayesiana. As estimativas geradas foram comparadas
Giselle Mariano Lessa de Assis, Lucia Galvão de Albuquerque, José Lindenberg Rocha Sarmento, José Marques Carneiro Júnior, Paulo Sávio Lopes, Marcelo Teixeira Rodrigues   +5 more
doaj   +1 more source

Methods for calculating the breeding values of missing traits and their comparison [PDF]

Journal of Central European Agriculture, 2014
The objective of this study was to calculate the breeding values (BVs) of traits missing in a selection index. Different traits can be evaluated within the breeding programs of given countries.
Lenka Krplkov, Josef Pribyl , Lubo Vostr , Mojmr VACEK, Ludek STDNK   +4 more
doaj   +1 more source

Semiparametric efficient estimation of genetic relatedness with machine learning methods [PDF]

arXiv, 2023
In this paper, we propose semiparametric efficient estimators of genetic relatedness between two traits in a model-free framework. Most existing methods require specifying certain parametric models involving the traits and genetic variants. However, the bias due to model misspecification may yield misleading statistical results.
arxiv  

Density influences the heritability and genetic correlations of fish behaviour under trawling‐associated selection

Evolutionary Applications, 2021
Fishing‐associated selection is one of the most important human‐induced evolutionary pressures for natural populations. However, it is unclear whether fishing leads to heritable phenotypic changes in the targeted populations, as the heritability and ...
Amélie Crespel, Toby Miller, Anita Rácz, Kevin Parsons, Jan Lindström, Shaun Killen   +5 more
doaj   +1 more source

Genetic and non-genetic correlates of vitamins K and D [PDF]

European Journal of Clinical Nutrition, 2007
To assess the genetic and nongenetic correlates of circulating measures of vitamins K and D status in a community-based sample of men and women.A cross-sectional study of 1762 participants of the Framingham Offspring Study (919 women; mean age 59 years).
Bess Dawson-Hughes, Joseph M. Massaro, Ramachandran S. Vasan, Christopher J. O'Donnell, E J Benjamin, Paul F. Jacques, Josée Dupuis, M Shea, Jose M. Ordovas, Ralph B. D'Agostino, Sarah L. Booth   +10 more
openaire   +2 more sources

Direct selection on male attractiveness and female preference fails to produce a response

BMC Evolutionary Biology, 2004
Background Theoretical studies suggest that direct and indirect selection have the potential to cause substantial evolutionary change in female mate choice.
Brooks Robert, Lindholm Anna K, Hall Matthew   +2 more
doaj   +1 more source

Genetic association between somatic cell score and milk lactose in early- to mid-lactation of first calving Fleckvieh cows [PDF]

Journal of Central European Agriculture, 2018
The present study aimed to assess genetic correlations of milk lactose (percentage and yield), lactose to fat ratio and lactose to protein ratio with somatic cell score (SCS) in the first half of lactation, the period with the highest risk of mastitis in
Angela Costa, Birgit Fuerst-Waltl, Christian Fuerst, Gábor Mészáros, Mauro Penasa, Johann Soelkner   +5 more
doaj   +1 more source

Correlated evolution: models and methods [PDF]

arXiv, 2021
In this article, we review the different models and methods to understand and estimate correlated evolution within the same genome, individual or species. We describe correlated evolution among traits, among genetic components and finally between traits and genetics.
arxiv  

GENETIC COVARIANCE OF FITNESS CORRELATES: WHAT GENETIC CORRELATIONS ARE MADE OF AND WHY IT MATTERS [PDF]

Evolution, 1991
The genetic variance-covariance matrix, G, is determined in part by functional architecture, the pathways by which variation in genotype influences phenotype. I develop a simple architectural model for G for two traits under directional selection constrained by their dependence on a common limiting resource. I assume that genetic variance is maintained
openaire   +3 more sources

The networked partial correlation and its application to the analysis of genetic interactions [PDF]

Journal of the Royal Statistical Society Series C -Applied Statistics, 66(3):647-665, 2017, 2015
Genetic interactions confer robustness on cells in response to genetic perturbations. This often occurs through molecular buffering mechanisms that can be predicted using, among other features, the degree of coexpression between genes, commonly estimated through marginal measures of association such as Pearson or Spearman correlation coefficients ...
arxiv   +1 more source